Tenosinovitis with psammomatous calcification – a case report

Abstract

Tenosynovitis with psammomatous calcification, described in 1983 by Gravanis and Gaffney, is poorly recognized by pathologists. Recently, tenosynovitis with psammomatous calcification differ from those of typical idiopathic calcifying tenosynovitis/calcific tendinitis and tumoral calcinosis, were reported based on the analysis of 6 cases. We report a 36-year-old man with tenosynovitis with psammomarous calcification involving the palmar side of the proximal interphalangeal (PIP) joint at left middle finger. He had been suffered from a slow growing painful mass at left finger for three weeks. He had not a history of persistent mild trauma and hyperphosphatemia. X-ray examination revealed ill-demarcated calcifying mass 5mm in diameter. The lesion, treated by surgical excision, was elastic soft and white-yellow mass on the volar plate of the PIP joint extending to the intraarticular space. Histologically, the lesion was centered in the tendon or peritendinous soft tissue and composed of a mixed fibroblastic and histiocytic proliferation with the formation of distinctive psammoma body-like spheroidal bodies.